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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package catalog.amazon;
import java.util.HashMap;
import java.util.Map;
import org.apache.tuscany.sca.databinding.impl.DOMHelper;
import org.osoa.sca.annotations.Property;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Service;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import catalog.CatalogService;
import catalog.util.XPathHelper;
/**
* @version $Rev$ $Date$
*/
@Service(CatalogService.class)
public class AmazonCatalogServiceImpl implements CatalogService {
private static final String AMAZON_TNS = "http://webservices.amazon.com/AWSECommerceService/2007-09-21";
@Reference(name = "amazonFindItems")
protected AmazonCatalogService itemSearch;
@Property(name="AWSAccessKeyId", required=true)
protected String accessKeyId;
private Node amazonItemSearch(String keywords) throws Exception {
Document doc = DOMHelper.newDocument();
Element wrapper = doc.createElementNS(AMAZON_TNS, "ItemSearch");
doc.appendChild(wrapper);
Element key = doc.createElementNS(AMAZON_TNS, "AWSAccessKeyId");
key.appendChild(doc.createTextNode(accessKeyId));
wrapper.appendChild(key);
Element request = doc.createElementNS(AMAZON_TNS, "Request");
wrapper.appendChild(request);
Element keywordsElement = doc.createElementNS(AMAZON_TNS, "Keywords");
keywordsElement.appendChild(doc.createTextNode(keywords));
request.appendChild(keywordsElement);
Element searchIndex = doc.createElementNS(AMAZON_TNS, "SearchIndex");
searchIndex.appendChild(doc.createTextNode("All"));
request.appendChild(searchIndex);
// System.out.println(new Node2String().transform(doc, null));
Node result = itemSearch.ItemSearch(doc);
return result;
}
public String[] get() {
try {
Node list = amazonItemSearch("Fruit");
Map<String, String> map = new HashMap<String, String>();
map.put("a", AMAZON_TNS);
NodeList nodes =
XPathHelper.selectNodes("//a:Item/a:ItemAttributes[a:ProductGroup='Grocery']/a:Title", list, map);
String titles[] = new String[nodes.getLength()];
System.out.println("Amazon catalog:");
for (int i = 0; i < nodes.getLength(); i++) {
titles[i] = nodes.item(i).getTextContent();
System.out.println("[" + i + "]" + titles[i]);
}
return titles;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
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